From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AB5F4C61DA4 for ; Thu, 16 Feb 2023 09:45:16 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pSaoz-0008Jp-5D; Thu, 16 Feb 2023 04:44:57 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pSaou-00085g-34 for qemu-devel@nongnu.org; Thu, 16 Feb 2023 04:44:52 -0500 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pSaoo-0006Ix-Ku for qemu-devel@nongnu.org; Thu, 16 Feb 2023 04:44:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=1fVTFj0bYzICeuIXvuNLzGQ/h9sPn+k7vgman+UIV1A=; b=sJ0Xw9zX+oznKQ/wqvzr9F9uQX RjqxVHcVHD4tb+mpczvxHop1d6nEo61f3GCMT1jV5ZguDMptgEClWBJDmVx/gHJ7RNjcvCC6MvAxb Qs0h5HF7FRwexgwGrboi3LAF7nPqGh6qkAvuaGsE4R+z+ob3zWu58Sc/v0u9YBhWx/dXhj0mjWXKu 6XJo3SpW/a0oHvUDYKOR0Pxb8BzbxZcP9qBryykZ9ySxMhQ17BsqGPsmOQJI2DZSPB0TCqUCxvuHI 2F75+tM0cpfOx/DX7oZ5Czg3l2hFGz9aFRRoDYpPdIqwCbU7cPZQVV3alPNLDkDKg3c9t5v1qFir8 thQyKvbg==; Received: from i7.infradead.org ([2001:8b0:10b:1:21e:67ff:fecb:7a92]) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1pSaok-008IbJ-0O; Thu, 16 Feb 2023 09:44:42 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1pSaoj-0090Cq-3D; Thu, 16 Feb 2023 09:44:42 +0000 From: David Woodhouse To: Peter Maydell , qemu-devel@nongnu.org Cc: Paolo Bonzini , Paul Durrant , Joao Martins , Ankur Arora , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Thomas Huth , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Juan Quintela , "Dr . David Alan Gilbert" , Claudio Fontana , Julien Grall , "Michael S. Tsirkin" , Marcel Apfelbaum , armbru@redhat.com, Stefano Stabellini , vikram.garhwal@amd.com Subject: [RFC PATCH v11bis 25/26] hw/xen: Subsume xen_be_register_common() into xen_be_init() Date: Thu, 16 Feb 2023 09:44:35 +0000 Message-Id: <20230216094436.2144978-26-dwmw2@infradead.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230216094436.2144978-1-dwmw2@infradead.org> References: <20230216094436.2144978-1-dwmw2@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Received-SPF: none client-ip=2001:8b0:10b:1236::1; envelope-from=BATV+33d3adc5578b079b0cf9+7116+infradead.org+dwmw2@casper.srs.infradead.org; helo=casper.infradead.org X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: David Woodhouse Every caller of xen_be_init() checks and exits on error, then calls xen_be_register_common(). Just make xen_be_init() abort for itself and return void, and register the common devices too. Signed-off-by: David Woodhouse --- hw/xen/xen-hvm-common.c | 18 +--------- hw/xen/xen-legacy-backend.c | 55 ++++++++++++----------------- hw/xenpv/xen_machine_pv.c | 6 +--- include/hw/xen/xen-legacy-backend.h | 3 +- 4 files changed, 25 insertions(+), 57 deletions(-) diff --git a/hw/xen/xen-hvm-common.c b/hw/xen/xen-hvm-common.c index 0a3ffbf955..44679116ce 100644 --- a/hw/xen/xen-hvm-common.c +++ b/hw/xen/xen-hvm-common.c @@ -765,22 +765,6 @@ void xen_shutdown_fatal_error(const char *fmt, ...) qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR); } -static void xen_register_backend(XenIOState *state) -{ - /* Initialize backend core & drivers */ - if (xen_be_init() != 0) { - error_report("xen backend core setup failed"); - goto err; - } - xen_be_register_common(); - - return; - -err: - error_report("xen hardware virtual machine backend registration failed"); - exit(1); -} - static void xen_do_ioreq_register(XenIOState *state, unsigned int max_cpus, MemoryListener xen_memory_listener) @@ -886,7 +870,7 @@ void xen_register_ioreq(XenIOState *state, unsigned int max_cpus, xen_bus_init(); - xen_register_backend(state); + xen_be_init(); return; diff --git a/hw/xen/xen-legacy-backend.c b/hw/xen/xen-legacy-backend.c index 96d0941a7c..d6ad190062 100644 --- a/hw/xen/xen-legacy-backend.c +++ b/hw/xen/xen-legacy-backend.c @@ -593,17 +593,26 @@ static int xenstore_scan(const char *type, int dom, struct XenDevOps *ops) /* -------------------------------------------------------------------- */ -int xen_be_init(void) +static void xen_set_dynamic_sysbus(void) +{ + Object *machine = qdev_get_machine(); + ObjectClass *oc = object_get_class(machine); + MachineClass *mc = MACHINE_CLASS(oc); + + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_XENSYSDEV); +} + +void xen_be_init(void) { xenstore = qemu_xen_xs_open(); if (!xenstore) { xen_pv_printf(NULL, 0, "can't connect to xenstored\n"); - return -1; + exit(1); } if (xen_evtchn_ops == NULL || xen_gnttab_ops == NULL) { - /* Check if xen_init() have been called */ - goto err; + xen_pv_printf(NULL, 0, "Xen operations not set up\n"); + exit(1); } xen_sysdev = qdev_new(TYPE_XENSYSDEV); @@ -611,22 +620,16 @@ int xen_be_init(void) xen_sysbus = qbus_new(TYPE_XENSYSBUS, xen_sysdev, "xen-sysbus"); qbus_set_bus_hotplug_handler(xen_sysbus); - return 0; - -err: - qemu_xen_xs_close(xenstore); - xenstore = NULL; - - return -1; -} - -static void xen_set_dynamic_sysbus(void) -{ - Object *machine = qdev_get_machine(); - ObjectClass *oc = object_get_class(machine); - MachineClass *mc = MACHINE_CLASS(oc); + xen_set_dynamic_sysbus(); - machine_class_allow_dynamic_sysbus_dev(mc, TYPE_XENSYSDEV); + xen_be_register("console", &xen_console_ops); + xen_be_register("vkbd", &xen_kbdmouse_ops); +#ifdef CONFIG_VIRTFS + xen_be_register("9pfs", &xen_9pfs_ops); +#endif +#ifdef CONFIG_USB_LIBUSB + xen_be_register("qusb", &xen_usb_ops); +#endif } int xen_be_register(const char *type, struct XenDevOps *ops) @@ -648,20 +651,6 @@ int xen_be_register(const char *type, struct XenDevOps *ops) return xenstore_scan(type, xen_domid, ops); } -void xen_be_register_common(void) -{ - xen_set_dynamic_sysbus(); - - xen_be_register("console", &xen_console_ops); - xen_be_register("vkbd", &xen_kbdmouse_ops); -#ifdef CONFIG_VIRTFS - xen_be_register("9pfs", &xen_9pfs_ops); -#endif -#ifdef CONFIG_USB_LIBUSB - xen_be_register("qusb", &xen_usb_ops); -#endif -} - int xen_be_bind_evtchn(struct XenLegacyDevice *xendev) { if (xendev->local_port != -1) { diff --git a/hw/xenpv/xen_machine_pv.c b/hw/xenpv/xen_machine_pv.c index 20c9611d71..2e759d0619 100644 --- a/hw/xenpv/xen_machine_pv.c +++ b/hw/xenpv/xen_machine_pv.c @@ -36,10 +36,7 @@ static void xen_init_pv(MachineState *machine) int i; /* Initialize backend core & drivers */ - if (xen_be_init() != 0) { - error_report("%s: xen backend core setup failed", __func__); - exit(1); - } + xen_be_init(); switch (xen_mode) { case XEN_ATTACH: @@ -55,7 +52,6 @@ static void xen_init_pv(MachineState *machine) break; } - xen_be_register_common(); xen_be_register("vfb", &xen_framebuffer_ops); xen_be_register("qnic", &xen_netdev_ops); diff --git a/include/hw/xen/xen-legacy-backend.h b/include/hw/xen/xen-legacy-backend.h index 6c2ae709f5..6c307c5f2c 100644 --- a/include/hw/xen/xen-legacy-backend.h +++ b/include/hw/xen/xen-legacy-backend.h @@ -39,8 +39,7 @@ int xenstore_read_fe_uint64(struct XenLegacyDevice *xendev, const char *node, void xen_be_check_state(struct XenLegacyDevice *xendev); /* xen backend driver bits */ -int xen_be_init(void); -void xen_be_register_common(void); +void xen_be_init(void); int xen_be_register(const char *type, struct XenDevOps *ops); int xen_be_set_state(struct XenLegacyDevice *xendev, enum xenbus_state state); int xen_be_bind_evtchn(struct XenLegacyDevice *xendev); -- 2.39.0